X-ray Hardness

View complete listing of X-Atlas Spectral Metrics (Hardness, Quantiles).

Hardness Ratios for M81*, Obsid 6895

Aimpoint HR₁ = (H-M)/(H+M) HR₂ = (M-S)/(M+S) HR₃ = (H-S)/(H+S)
ACIS-S -0.011 0.147 0.136
ACIS-I 0.040 0.398 0.431

Quantiles for M81*, Obsid 6895

Aimpoint Quantiles 25 % 25 % Error 50 % 50 % Error 75 % 75 % Error
ACIS-S keV 0.869 0.006 1.248 0.007 1.832 0.012

Q-norm 0.074 0.001 0.123 0.001 0.199 0.002
ACIS-I keV 1.029 0.005 1.380 0.007 2.008 0.017

Q-norm 0.095 0.001 0.140 0.001 0.222 0.002

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Hardness Ratios for M81*, Obsid 6895
Aimpoint	HR₁ = (H-M)/(H+M)	HR₂ = (M-S)/(M+S)	HR₃ = (H-S)/(H+S)
ACIS-S	-0.011	0.147	0.136
ACIS-I	0.040	0.398	0.431

Quantiles for M81*, Obsid 6895
Aimpoint	Quantiles	25 %	25 % Error	50 %	50 % Error	75 %	75 % Error
ACIS-S	keV	0.869	0.006	1.248	0.007	1.832	0.012
ACIS-S	Q-norm	0.074	0.001	0.123	0.001	0.199	0.002
ACIS-I	keV	1.029	0.005	1.380	0.007	2.008	0.017
ACIS-I	Q-norm	0.095	0.001	0.140	0.001	0.222	0.002